47-720-INK 30 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=300mm VIS 0° 425-675nm

The 47-720-INK is a high-quality achromatic doublet lens, sourced from Edmund Optics, with a diameter of 30 mm and a focal length of 300 mm. This lens is designed for use within the visible light spectrum, specifically between 425-675 nm.

The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott, which are renowned for their optical clarity and precision. The use of these materials in a doublet configuration helps to correct chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points.

The lens features a standard curvature coating on both the front and back surfaces, denoted as 'edm vis-0 std curve'. This coating is designed to enhance the lens's performance by reducing surface reflections and improving transmission.

The geometry of the lens is carefully designed to optimize its performance. The edge thickness is 6.12 mm, while the center thickness is 4.5 mm. The lens also features a central thickness 'a' of 2.5 mm. The inner and outer radii are zero, indicating a symmetrical design.

The lens is available for purchase directly from the Edmund Optics website, and at the time of data collection, it was in stock. For more detailed information, including technical specifications and purchasing options, please refer to the provided weblink.